1//  (C) Copyright John Maddock 2001.
2//  Use, modification and distribution are subject to the
3//  Boost Software License, Version 1.0. (See accompanying file
4//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5
6//  See http://www.boost.org/libs/config for most recent version.
7
8//  MACRO:         BOOST_HAS_HASH
9//  TITLE:         <hashset> and <hashmap>
10//  DESCRIPTION:   The C++ implementation provides the (SGI) hash_set
11//                 or hash_map classes.
12
13#if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
14#  ifdef BOOST_NO_CXX11_STD_UNORDERED
15#    define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
16#    define _BACKWARD_BACKWARD_WARNING_H 1 /* turn off warnings from the headers below */
17#    include <ext/hash_set>
18#    include <ext/hash_map>
19#  else
20     // If we have BOOST_NO_CXX11_STD_UNORDERED *not* defined, then we must
21     // not include the <ext/*> headers as they clash with the C++0x
22     // headers.  ie in any given translation unit we can include one
23     // or the other, but not both.
24#    define DISABLE_BOOST_HAS_HASH_TEST
25#  endif
26#else
27#include <hash_set>
28#include <hash_map>
29#endif
30
31#ifndef BOOST_STD_EXTENSION_NAMESPACE
32#define BOOST_STD_EXTENSION_NAMESPACE std
33#endif
34
35namespace boost_has_hash{
36
37#ifndef DISABLE_BOOST_HAS_HASH_TEST
38
39template <class Key, class Eq, class Hash, class Alloc>
40void foo(const BOOST_STD_EXTENSION_NAMESPACE::hash_set<Key,Eq,Hash,Alloc>& )
41{
42}
43
44template <class Key, class T, class Eq, class Hash, class Alloc>
45void foo(const BOOST_STD_EXTENSION_NAMESPACE::hash_map<Key,T,Eq,Hash,Alloc>& )
46{
47}
48
49#endif
50
51int test()
52{
53#ifndef DISABLE_BOOST_HAS_HASH_TEST
54   BOOST_STD_EXTENSION_NAMESPACE::hash_set<int> hs;
55   foo(hs);
56   BOOST_STD_EXTENSION_NAMESPACE::hash_map<int, long> hm;
57   foo(hm);
58#endif
59   return 0;
60}
61
62}
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